目的　探讨外伤后不同类型视网膜脱离的损伤参与度。方法　对２３ 例我室检验的眼外伤后发生视网膜脱离的法医学鉴定案例进行回顾性分析。结果　穿通伤占２６ ％ ， 钝挫伤占７０ ％ （ 其中钝挫破裂伤占２５ ％ ， 单纯钝挫伤占７５ ％ ） ， 无明确外伤史占４ ％ 。单纯钝挫伤后发生视网膜脱离眼均有不同程度的屈光不正， 其中－ ６－００ＤＳ以上的高度近视眼占５８ ％ 。外伤后视网膜脱离损伤参与度的评定为：眼球穿通伤（ 主要是眼球后段的穿通伤） 及钝挫破裂伤后发生视网膜脱离， 其损伤参与度为１００ ％ ； 锯齿缘离断的损伤参与度为７５ ％ ； 伤病共存的损伤参与度为２５ ％ ～５０ ％ ； 原有眼底视网膜、玻璃体变性，外伤为辅助或诱发因素时， 损伤参与度为１２－５ ％ ～２５％ ； 眼部无明确外伤史者损伤参与度为０ ％ 。结论　外伤后视网膜脱离的发生与高度近视眼视网膜、玻璃体发生退行性改变有关。损伤参与度的评定有助于损伤事件的性质分析和损害赔偿范围的确定 Objective To investigate the degree of injury involvement of different types of retinal detachment after trauma. Methods A retrospective analysis of 23 cases of forensic identification of retinal detachment after ocular trauma was performed in our laboratory. The results of penetrating injury accounted for 26%, blunt contusion 70% (including blunt rupture of 25%, blunt contusion 75%), no clear history of trauma accounted for 4%. After simple contusion retinal detachment occurred in patients with varying degrees of refractive error, of which - 6-00DS above 58% of high myopia. The degree of retinal detachment injury after traumatic injury was assessed as follows: penetrating traumatic eye injury (mainly the penetrating trauma in the posterior segment of the eyeball) and retinal detachment after blunt traumatic rupture with a degree of injury involvement of 100%; injury involvement Of 75%; injury coexistence of injury participation of 25% to 50%; the original fundus retina, vitreous degeneration, trauma as a secondary or predisposing factor, the injury participation of 12-5% to 25%; no clear eye Trauma history injury participation is 0%. Conclusion The occurrence of retinal detachment after traumatic injury is associated with degeneration of retina and vitreous in high myopia. Assessment of injury participation contributes to the nature of injury events and the determination of the scope of damages